163044040 has 32 divisors (see below), whose sum is σ = 371881080. Its totient is φ = 64323072.

The previous prime is 163044017. The next prime is 163044047. The reversal of 163044040 is 40440361.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 145588356 + 17455684 = 12066^2 + 4178^2 .

It is not an unprimeable number, because it can be changed into a prime (163044047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24999 + ... + 30838.

Almost surely, 2^163044040 is an apocalyptic number.

163044040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163044040 is an abundant number, since it is smaller than the sum of its proper divisors (208837040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163044040 is a wasteful number, since it uses less digits than its factorization.

163044040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55921 (or 55917 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 163044040 is about 12768.8699578310. The cubic root of 163044040 is about 546.3047492109.

The spelling of 163044040 in words is "one hundred sixty-three million, forty-four thousand, forty".